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normandy
2006 Jun 18
1
Method for selection bias with multinomial treatment
I have to the treatment effect base on the observational data.And the
treatment variable is multinomial rather than binary.Because the
treatment assignment is not random,so the selection-bias exists.Under
this condition,what's the best way to estimate the treatment effect?
I know that if the treatment is binary,I can use propensity score
matching using MatchIt package.But what about